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A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology


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The Journal of Sports Medicine and Physical Fitness 2002 June;42(2):207-13

CARDIOVASCULAR SYSTEM 

 Original articles

Relationship between cardiorespiratory fitness, body composition and blood pressure in school children

Guerra S., Ribeiro J. C., Costa R., Duarte J. *, Mota J.

From the Research Centre in Physical Activity and Leisure,
*Laboratory of Experimental Morphology, University of Porto, Porto, Portugal

Background. The pur­pose of ­this com­par­a­tive and cor­re­la­tion­al ­cross-sec­tion­al ­study was to ­describe the asso­ci­a­tions ­between car­di­o­res­pir­a­to­ry fit­ness, ­blood pres­sure and ­body com­po­si­tion in Portuguese ­school chil­dren.
Methods. The sam­ple com­prised 529 chil­dren (246 ­males and 283 ­females) ­aged 8-15 ­years-old. Body ­height and ­body mass ­were deter­mined by stan­dard anthro­po­met­ric meth­ods. Blood pres­sures ­were meas­ured ­with chil­dren sit­ting ­after at ­least 5 min­ ­rest. The max­i­mal mul­ti­stage 20 m shut­tle run ­test was car­ried-out to pre­dict max­i­mal aero­bic pow­er.
Results. The ­present ­study ­shows ­that ­boys ­were ­more fit (p≤0.05) and ­less fat ­than ­girls (p≤0.05). Multiple regres­sion anal­y­sis ­reveals ­that ­weight and age ­explained sig­nif­i­cant­ly (p≤0.01) the ­amounts of sys­tol­ic ­blood pres­sure (SBP) and dia­stol­ic ­blood pres­sure (DBP). In ­girls, per­cent­age of fat (%F) ­showed an influ­ence on the var­i­ance in SBP (4.9%, p≤0.05). In addi­tion, ­weight (14.5%) and age (9.8%) ­account sig­nif­i­cant­ly (p≤0.01) for the ­amount of var­i­ance to DBP in ­males. For ­girls, age (11.4%) and BMI (2.4%) ­account sig­nif­i­cant­ly to the var­i­ance ­found in DBP. However, the inde­pen­dent var­i­ables, for ­both sex­es, ­account ­less ­than 50% of the over­all var­i­ance ­found in ­blood pres­sures val­ues.
Conclusions. In con­clu­sion, the ­present ­study ­shows ­that ­boys ­were ­more fit and had ­less fat ­than ­girls. The lev­el of car­di­o­res­pir­a­to­ry fit­ness ­does not ­seem to be an impor­tant cor­re­late of ­blood pres­sure vari­a­tion ­across age ­groups and gen­der.

language: English


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